De Grote Steunbeer over de Demer is een stuw met 3 doorstroomopeningen met een breedte van 4 m. De middelste opening betreft een type overlaat met brede drempel, dewelke het water bij lage afvoeren afvoert. De linkse en rechtse doorstroomopeningen zijn afgesloten met schotten tot een peil 20.27 mTAW en 20.24 mTAW. Enkel bij hoge opwaartse waterstanden in de Demer wordt het water ook via deze openingen afgevoerd.
VMM plant een nieuwe brug onmiddellijk afwaarts van deze stuw. Voor de bouw van de brug, die bestaat uit twee delen, moet een tijdelijke ondersteuning geplaatst worden in het midden van de Demer ca. 12.0 m voor de middelste opening van de Grote Steunbeer.
VMM vraagt aan WL een inschatting van de stroomsnelheden ter plaatse van de tijdelijke pijler en een inschatting van de krachten ten gevolge van de stroming op deze pijler.
WL stelt voor om voor 5 verschillende opwaartse waterpeilen, +18.5 mTAW, 19.0 mTAW,
19.5 mTAW, 20.0 mTAW en 20.5 mTAW aan de hand van literatuurformules een inschatting te maken van de stroomsnelheden in de middelste doorstroomopening. Een terreinmeting ter controle van de berekende stroomsnelheden is ook een optie.
Dit project is beleidsuitvoerende dienstverlening voor NeXperta (BUP).
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